Japanese words 一期一会 ichi-go-ichi-e: This proverb to come from tea ceremony.It means "This time meeting you in this way is the only once that never comes round. Therefore let's think this moment to be important, and do the highest entertainment that can be done now. This is knowledge of the first on the list of the tea ceremony of Sen no Rikyu. In other words, it means that you may meet the person again and again, but you contact with a person with resolution that it is likely not to meet.